Srs transmission method and apparatus

Abstract

This application provides an SRS transmission method and apparatus. The SRS transmission method in this application includes: A network device sends configuration information of an SRS resource set to a terminal device, where the SRS resource set includes a first SRS resource and a second SRS resource, and the first SRS resource and the second SRS resource each include four ports. The terminal device determines a first antenna set and a second antenna set, and determines antennas respectively corresponding to the four ports included in the first SRS resource and antennas respectively corresponding to the four ports included in the second SRS resource. The terminal device separately sends an SRS to a base station through the four ports included in the first SRS resource and the four ports included in the second SRS resource.

1 . An SRS transmission method, applied to a device has a 4 transmit 8 receive capability, and the method comprises:
 obtaining a channel sounding reference signal SRS resource set, wherein the SRS resource set comprises a first SRS resource and a second SRS resource, and the first SRS resource and the second SRS resource each comprise four ports;   determining a first antenna set and a second antenna set, wherein the first antenna set and the second antenna set each comprise four antennas of the eight receive antennas, and there is no intersection of the first antenna set and the second antenna set;   determining antennas respectively corresponding to the four ports comprised in the first SRS resource and antennas respectively corresponding to the four ports comprised in the second SRS resource, wherein the four antennas corresponding to the four ports comprised in the first SRS resource belong to the first antenna set and/or the second antenna set, and the four antennas corresponding to the four ports comprised in the second SRS resource belong to the first antenna set and/or the second antenna set; and   separately sending an SRS to a base station through the four ports comprised in the first SRS resource and the four ports comprised in the second SRS resource.   
     
     
         2 . The method according to  claim 1 , wherein two of the four ports comprised in the first SRS resource correspond to two of the four antennas in the first antenna set, and the other two of the four ports comprised in the first SRS resource correspond to two of the four antennas in the second antenna set; two of the four ports comprised in the second SRS resource correspond to two of the four antennas in the first antenna set, and the other two of the four ports comprised in the second SRS resource correspond to two of the four antennas in the second antenna set; and there is no intersection of the antennas corresponding to the different ports. 
     
     
         3 . The method according to  claim 1 , wherein three of the four ports comprised in the first SRS resource correspond to three of the four antennas in the first antenna set, and the other one of the four ports comprised in the first SRS resource corresponds to one of the four antennas in the second antenna set; three of the four ports comprised in the second SRS resource correspond to three of the four antennas in the second antenna set, and the other one of the four ports comprised in the second SRS resource corresponds to one of the four antennas in the first antenna set; and there is no intersection of the antennas corresponding to the different ports. 
     
     
         4 . The method according to  claim 1 , wherein the four ports comprised in the first SRS resource correspond to the four antennas in the first antenna set; the four ports comprised in the second SRS resource correspond to the four antennas in the second antenna set; and there is no intersection of the antennas corresponding to the different ports. 
     
     
         5 . The method according to  claim 2 , wherein a port used by an antenna in the first antenna set to send an SRS and a port used by an antenna in the second antenna set to send an SRS are distinguished by using combs; a port used by an antenna in the first antenna set to send an SRS and a port used by an antenna in the second antenna set to send an SRS are distinguished by using cyclic shifts; or a port used by an antenna in the first antenna set to send an SRS and a port used by an antenna in the second antenna set to send an SRS are distinguished by using port indexes. 
     
     
         6 . An SRS transmission apparatus, used in a terminal device, wherein the terminal device has a 4 transmit 8 receive capability, and the apparatus comprises:
 a processor, configured to obtain a channel sounding reference signal SRS resource set, wherein the SRS resource set comprises a first SRS resource and a second SRS resource, and the first SRS resource and the second SRS resource each comprise four ports;   the processor, further configured to: determine a first antenna set and a second antenna set, wherein the first antenna set and the second antenna set each comprise four antennas of the eight receive antennas, and there is no intersection of the first antenna set and the second antenna set; and determine antennas respectively corresponding to the four ports comprised in the first SRS resource and antennas respectively corresponding to the four ports comprised in the second SRS resource, wherein the four antennas corresponding to the four ports comprised in the first SRS resource belong to the first antenna set and/or the second antenna set, and the four antennas corresponding to the four ports comprised in the second SRS resource belong to the first antenna set and/or the second antenna set; and   a transceiver, configured to separately send an SRS to a base station through the four ports comprised in the first SRS resource and the four ports comprised in the second SRS resource.   
     
     
         7 . The apparatus according to  claim 6 , wherein two of the four ports comprised in the first SRS resource correspond to two of the four antennas in the first antenna set, and the other two of the four ports comprised in the first SRS resource correspond to two of the four antennas in the second antenna set; two of the four ports comprised in the second SRS resource correspond to two of the four antennas in the first antenna set, and the other two of the four ports comprised in the second SRS resource correspond to two of the four antennas in the second antenna set; and there is no intersection of the antennas corresponding to the different ports. 
     
     
         8 . The apparatus according to  claim 6 , wherein three of the four ports comprised in the first SRS resource correspond to three of the four antennas in the first antenna set, and the other one of the four ports comprised in the first SRS resource corresponds to one of the four antennas in the second antenna set; three of the four ports comprised in the second SRS resource correspond to three of the four antennas in the second antenna set, and the other one of the four ports comprised in the second SRS resource corresponds to one of the four antennas in the first antenna set; and there is no intersection of the antennas corresponding to the different ports. 
     
     
         9 . The apparatus according to  claim 6 , wherein the four ports comprised in the first SRS resource correspond to the four antennas in the first antenna set; the four ports comprised in the second SRS resource correspond to the four antennas in the second antenna set; and there is no intersection of the antennas corresponding to the different ports. 
     
     
         10 . The apparatus according to  claim 7 , wherein a port used by an antenna in the first antenna set to send an SRS and a port used by an antenna in the second antenna set to send an SRS are distinguished by using combs; a port used by an antenna in the first antenna set to send an SRS and a port used by an antenna in the second antenna set to send an SRS are distinguished by using cyclic shifts; or a port used by an antenna in the first antenna set to send an SRS and a port used by an antenna in the second antenna set to send an SRS are distinguished by using port indexes. 
     
     
         11 . An SRS transmission apparatus, used in a network device, wherein the apparatus comprises:
 a transceiver, configured to send configuration information of a channel sounding reference signal SRS resource set to a terminal device, wherein the SRS resource set comprises a first SRS resource and a second SRS resource, and the first SRS resource and the second SRS resource each comprise four ports;   the transceiver, further configured to separately receive, through the four ports comprised in the first SRS resource and the four ports comprised in the second SRS resource, an SRS sent by the terminal device; and   a processor, configured to: determine an antenna set to which antennas corresponding to the four ports comprised in the first SRS resource belong, and determine an antenna set to which antennas corresponding to the four ports comprised in the second SRS resource belong.   
     
     
         12 . The apparatus according to  claim 11 , wherein two antennas corresponding to two of the four ports comprised in the first SRS resource belong to the first antenna set, and two antennas corresponding to the other two of the four ports comprised in the first SRS resource belong to the second antenna set; and two antennas corresponding to two of the four ports comprised in the second SRS resource belong to the first antenna set, and two antennas corresponding to the other two of the four ports comprised in the second SRS resource belong to the second antenna set. 
     
     
         13 . The apparatus according to  claim 11 , wherein three antennas corresponding to three of the four ports comprised in the first SRS resource belong to the first antenna set, and one antenna corresponding to the other one of the four ports comprised in the first SRS resource belongs to the second antenna set; and three antennas corresponding to three of the four ports comprised in the second SRS resource belong to the second antenna set, and one antenna corresponding to the other one of the four ports comprised in the second SRS resource belongs to the first antenna set. 
     
     
         14 . The apparatus according to  claim 12 , wherein a port used by an antenna in the first antenna set to send an SRS and a port used by an antenna in the second antenna set to send an SRS are distinguished by using combs; a port used by an antenna in the first antenna set to send an SRS and a port used by an antenna in the second antenna set to send an SRS are distinguished by using cyclic shifts; or a port used by an antenna in the first antenna set to send an SRS and a port used by an antenna in the second antenna set to send an SRS are distinguished by using port indexes.